docs(Eino): fix package error in "indexer_milvus" and "retriever_milvus" (#1317)

Author: Wood-Q

content/en/docs/eino/ecosystem/indexer/indexer_milvus.md

@@ -18,7 +18,7 @@ with Eino's vector storage and retrieval system for enhanced semantic search cap
 ### Installation
 
 ```bash
-go get github.com/eino-project/eino/indexer/milvus@latest
+go get github.com/cloudwego/eino-ext/components/indexer/milvus
 ```
 
 ### Create the Milvus Indexer
@@ -35,7 +35,7 @@ import (
 	"github.com/cloudwego/eino/schema"
 	"github.com/milvus-io/milvus-sdk-go/v2/client"
 
-	"github.com/cloudwego/eino-ext/components/retriever/milvus"
+	"github.com/cloudwego/eino-ext/components/indexer/milvus"
 )
 
 func main() {

content/en/docs/eino/ecosystem/retriever/retriever_milvus.md

@@ -18,7 +18,7 @@ with Eino's vector storage and retrieval system for enhanced semantic search cap
 ### Installation
 
 ```bash
-go get github.com/eino-project/eino/retriever/milvus@latest
+go get github.com/cloudwego/eino-ext/components/retriever/milvus
 ```
 
 ### Create the Milvus Retriever

content/zh/docs/eino/ecosystem_integration/indexer/indexer_milvus.md

@@ -17,7 +17,7 @@ Eino 的向量存储和检索系统，增强语义搜索能力。
 ### 安装
 
 ```bash
-go get github.com/eino-project/eino/indexer/milvus@latest
+go get github.com/cloudwego/eino-ext/components/indexer/milvus
 ```
 
 ### 创建 Milvus 存储
@@ -34,7 +34,7 @@ import (
 	"github.com/cloudwego/eino/schema"
 	"github.com/milvus-io/milvus-sdk-go/v2/client"
 
-	"github.com/cloudwego/eino-ext/components/retriever/milvus"
+	"github.com/cloudwego/eino-ext/components/indexer/milvus"
 )
 
 func main() {

content/zh/docs/eino/ecosystem_integration/retriever/retriever_milvus.md

@@ -19,7 +19,7 @@ Eino 的向量存储和检索系统，增强语义搜索能力。
 ### 安装
 
 ```bash
-go get github.com/eino-project/eino/retriever/milvus@latest
+go get github.com/cloudwego/eino-ext/components/retriever/milvus
 ```
 
 ### 创建 Milvus 搜索